fix: fix event loop deadlock on add event source

[mark-neuracore]

• when calling from a thread with the same event loop, the blocking causing a deadlock and it timesout.
• this should fix it and there is a test to check for this specific case added

[github-actions]

✅ PR source branch is valid

• Source: fix/fix-event-loop-deadlock-on-add-event-source
• Target: develop

[mark-neuracore]

@stepjam @muneebneura I have cleaned the battlefield that happened here somehow and retrieved the dangling commit from @CougarTasker and myself. This could have prevented all this mess had I asked Cougar to review the PR and merged it.

This now reverts back the changes @muneebneura added since we moved on to using asyncio tasks.

@CougarTasker @mark-neuracore @muneebneura @stepjam we will need a meeting on monday to discuss the p2p flakiness we have been experiencing recently. Heads up, my experience with asyncio and the async programming lingo is this of a 3-year-old so go easy on me :)

[mark-neuracore]

Edit: shout out to @damonhayhurst-neuraco for catching the hilarious typo of peer as "pier" that has been in our repo for about 7 months now :0 !

[CougarTasker]

LGTM, but I am biased @muneebneura/ @damonhayhurst-neuraco give this a scan too

[damonhayhurst-neuraco]

LGTM w/ comment